I5 2500k - Gigabyte Z68XP-UD3P Overclocking

After 3 days of no cold boot issues, today I go out for two hours come back home, turn the system on it doesn't show a boot screen with no video display it shuts itself off :mad:. I take out the psu cable, plug it back in the system boots on it's own and again it shuts off :mad:

Take out the psu cable again, plug it back in system boots on it's own and it works perfectly back into windows :rolleyes:
 
hsiaolc said:
He doesn't really undestand that concept. I already told him that sleep mode will make you go into serious cold reboots. Also stepping cpu speed causes instablity. Basically you are letting the cpu choose the speed it runs and and hopefully the motherboard gives the right amount of Vcore instead of a constant. But hey its your computer.

To acheive a better OC it is even suggested by other pros to turn Turbo off. But hey he prefer to cold boot and then blame gigabyte.

I will post back after a month. At the present moment my rig have passed 24Hour Prime and at 54C at 1.265V applied to Vcore.

I already passed IBT at very stressed level 20 loops.

No cold boots. Feel stable. After tomorrow I will try to restart and reboot 100 times to see if I get any cold boots.

Guess what neil next time you go out again and come back home you will have the same problem.
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I don't use sleep mode and never said I did and where Am i letting the computer have control of the speed?, I've set TURBO to 4.7GHZ and adjusted accordingly it's what you should do. I also adjust the VCORE myself not the computer. Turbo is the better option it saves on energy and is only in use when it's needed, there is no point having it running at 4.7ghz at high volts all the time.

I've done my research and you've done yours however if an ASROCK board or an ASUS board can do generally the same settings and use TURBO and have no cold boot issues. IT'S THE BOARD or the BIOS!. Until you can prove one way or another what the certified cause is of any cold boot issues i'd love to hear it. So far people have been told, its' because they didn't bios back up, then it's because they have quick boot, then it's because of the VTT.
 
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Vcore is adjusted permanantly :) it's always at 1.36-1.38 only it does rise to 1.40v with LLC enabled, it never drops to 1.045v and never will as I don't use offset mode :)... So again you are wrong :(, I know you are trying to help and for that i'm thankful however a lot of the points you've put across to what i've done has been very inaccurate.

Anyway let's leave it at that, i'm tired and more likely to get grumpy :p
 
hsiaolc said:
Sure lets leave at that.

What I am confused about is that you said earlier that you want to have cpu power down or step down. If when it does step down but your Vcore doesn't than whats the point to have cpu step down EIST and C1E on?
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Hence the reason it was on AUTO so the system figures it out on it's own, because I read your posts I put it to ON that was my dumbass moment. However not that it will have any affect as it can't drop the volts because I have full control over it :D. Will sort it out when i wake up

Only the cpu speed drops, that's what I meant by power
 
Then use offset voltage and not LLC then

That's all im going to say now as it's taking it way off topic when the overclock works. This cold boot issue can affect anyone, DEFAULT or OVERCLOCKED, I don't have freezes or boot loops when I reset. I can play for hours and hours, I'm also prime stable 24hr and EXTREME mode of Intel Burn Test.

Read the forums it's an issue they've yet to find :), Goodnight!
 
No cold boot's at all today...

liamcrane said:
First off great thread Neil! im looking at getting my i5 soon with this board or the cheaper Z68-AP and i was just curious to know how the offset voltage works to get the great overclock you have on your chip? I am kind of new to this and have never used off set before as i dont really have these features on my current board and i would love to try and get the clocks you guys have posted in this thread
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I don't use offset I use Load Line calibration instead which helps with vdroop, offset is good if you want the volts as well as the core speed to drop when idle then raise when it's needed
 
On my board I've set level 6, some may try level 5 depends how much vdroop you get and if the voltage goes up too much with a higher level. My voltage never drops below 1.380 it only raises slightly if under extreme load.
 
Your VTT is way to high, only needs to be about 1.2 max it may go beyond 1.3v when having load put on it with your setting, your CPU PLL might be better at 1.750. Your CPU V.CORE would be better being lower as you have a LEVEL 5 load line which means if you use intel burn test it may well go beyond 1.4v. As for the BSOD at 4.5 I don't know why, i'm stable at 4.7
 
Touch BIOS shows Dynamic Vcore (DVID) to Auto, then you are using load line calibration and not offset mode :D

The higher the level of load line calibration the less change of having vdroop ( volts dropping under load ) but too high and it will go the other way. Volts going too high under load. Try it with a lower voltage core then run intel burn test while using cpuz and see what the volts get to.
 
No cold boot issue this morning either, perhaps it's temp related as both today and yesterday I've had the room heater on ?

Could just be placebo lol ;)
 
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No cold boot issue this morning again, room was kept at a nice temp not cold before I started the system....

Still could just be placebo though
 
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